+ - Topic is no longer limited to 127 characters. The only limit is now the maximum
+ length of a irc command, i.e. 512 bytes. (in pratice, this limits the topic to about
+ 490 characters due to protocol overhead)
+ - Reverse DNS lookup code now checks the result by doing an additional
+ lookup to prevent spoofing.
+ - Added new IO layer which (optionally) supports epoll() and kqueue() in
+ addition to the select() interface.